T.P.
My daughter was never big on a paci or thumbsucking and had pretty much stopped all together by 18m. But, in the past 3-4m she has been sucking her fingers more when she's teething. First it was her two canine teeth, now I believe she is working on her 2 yr molars. I don't worry about it too much, and on the days when she seems to be sucking on them a lot more than usual I give her some ibuprofin at bedtime to help the teething ache.
As for the blanket lovey, that's perfectly normal and I wouldn't worry about that at all. My daughter has a little bear/blanket named "Bubba" (she named him) she takes with her to the babysitters or when she spends the night at grandmas house. I just set some basic rules about Bubba not being at the dinner table or outside swimming/playing etc.